Multiple-door bolt.



W. J. PARLE. MULTIPLE Doon BOLT.

1 APPLIOATXON FILED 00T. 13, 1908.

Patented May 18, 1909.

2 BEEBTB-SHBBT 1.

' W.' J. PARLE. MULTIPLBDOOR BOLT'. APPLICATION FILED omda, 190s;

Patented May 18;1909.

2 SHEETSd-BHBET 2.

WALTERJ. PARLE, or roN'rIAo, Missioni.

MULTIPLE-DOOR BOLT.

ne. senese.

To cil whom 'it may concern:

Be it moon that Lllsnrnn J. PARLE, e citizen of theA United States, residing Aat Pontiac, in the county of Oakland und State of Michigan, lieve invented new end usefulA improvements in Multipledoor Bolts, of

which the ollowin is e specification.

This' invention re etes to locks for single or double swinging or sliding doors, the object of the invention losing; to rovide e sim-' ple and. eective looiging'mec anism which possesses certain novlfeatures of construeg tion end'meteriel advantages in operation 'as hereinafter fully described and claimed. in the accompanying drawing,-lligure l is en inner elevational view, parts being broken away, showing the applica tion of the invention to en `outwardly swinging door. Fig. 2 is un irregular vertical longitudinal section of the same. Fig. 3 is en outer' or rear elevational view of the. upper keeper and trip device.

Referring to the drawing, 1 designates e door, which in the present illustration, is designed to represent sin outwardly swinging door. The inner fece of this door is provided with sockets or recesses 2, 3, and 4, respectively, covered by slotted weer plates 5, 6, end 7 suitably fastened to seid face of the door. The recesses 2 end 3 ere arranged et or near the upper and lower edges of the door end adjacent to the free side or swinging edge thereof, while the recess 4- may be disposednt any intermediate point between the Saint?.

5S 'may represent the side ol.' the door freine opposite the side to which the door i is hinged or pivo'ed or it may represent e conlpanion swinging door in :i doubledoor con struction, :is -liereinnller described.

Secured to the ceiling or top of the door treme above the door opening is e, keeper ccmprisinp,l e brsckct plete 9 having spaced depending- :mns l() :1nd l1, which support un intcrmedintclyarranged horiyontnl keeper pin i2. The erm 1() and adjacentportion of the pin nre arranged on the inner side ot' the door openingf :ind in the path of the door, as shown. l similar keeper is secured to the lloor or sill ofthe door irulne end comprises e bracket i? having Aspaced uprghtly extendine :mns 14 and 15 which support e The erin 14 sind Ab horizontal keeper pin 16. adjacent portion of the pin 16 nre also nrrenged on the inner side of the door openingvv Specication of Letters Patent.

Application filed October 13, 1908. Serial No. @57,50%

Patented May 18, 1909.

and in the oath of the door.LA When the door is closed, t 1e faces of the plates 5 and 6 ebut ago-inst these keeper brackets 9 end i3 end form therewith stops to limit the closing movement of the door and hold thel seme firmly against further inward movement.

Corresponding swinging bolts 17 and 18 ere pivotally mounted it their inner ends upon transverse pins 1Q end 20 in the recesses 2 end 3 endproject outwardly throuvh the slots inthe "'letes' and 6. These' bots ere provided Witi downwerdlyprojecting'hooked outer ends 21 to' engage the pins 12 and 16,1

seid hooked ends'being formed with o curved or beveled contact foce 22. The pins 12 and 16 erefprefernbly in the form of rollers jou'rw vnaled to rotate in the keeper brackets-to facilitate the engagement end disengagement of the hooks therewith and therefrom and to reduce the resulting friction. Coiled eontrnctile springs 23 and 24 are arranged inthe respective recesses 2 and 3 end are con nected With the ivoted ends of the bolts to' throw the hooked) locking ends thereof downward into normal locking position.- Esc of these springs is secured et one end to ocrenk; lug or projection 25 on the pivoted end of the 'bolt and et its other end to en attaching lue or projection 25 on the associated weer sind sto. plete.

l hen the door is swung to a'closed -osi tion, the curved or beveled contact-surfaces 220i the bolts contect With the outer sidesl of the pins 1.2 :nid 16 end ride up en said pins' under the swing of the bolts on their pivots against the resistance of the springs, which nre expanded, end then snep down into engagement with the inner feces of said pins under the contraction of the springs, thusl rendering the locking notion automatic. At the institut the bolts come into locking en gagement Withthe pins the plates 5 end 6v :ibut squarely against-the brackets 9 and 13, whereby the door will be heldrmly et top .find bottom against play in either direction.4 rll'he vertical slots in the plates 5 and 6- through which the bolts reject ere ot such l length :is to permit the bo ts to have just the required amount of pivotal movement, theA u )per wells of the s ots acting as stops toellow the bolts to poss easily over the keeper pins es thc door begins its opening and con-v cludes its closing movement,l WhileI the lower end wells ol the slots serve its stops to prevent downward movement vof the bolts' beyond their normal horizontal locking position. The bolts will thus be supported and reinforced by the plates at all times except -When they are swinging into and out of ene .gagement with the keeper pins, thus adding preferabl composed of sections coupled by a turn buc le 28, by which the rod may be adjusted as to length to insure an accurate action of the bolts andto comp ensate for other conditionsJre uiring relative adjustment of the bolts. n operating lever 29 isv vpivoted at one end on a pin 30 within the recess 4 and projects through the slot in the wear plate 7. This lever 1s intermediately ivoted to the rod 27 by a pin or stud 3l and 1s provided at its opposite or outer end with a lateral handle 32. By a lifting motion of this' lever` the hooked locking bolts may be raised out of engagement with .the keeper pins to unlock the door and permit it to be swung open, the parts being returned to normal or locking osition' u on the subsequent release of the ever by't e gravity of their weight and the action of the springs. When the art 8 is a companion door to door 1 in a dou le-door construction, it will be understood that said door 8 will be provided with a correspondin set' of locking devices, the hooks of whic may engage the same, keepers or an independent set of keepers to indeendently lock said door 8 in closed position. n the drawings, however, l have shown the keepers of proper size and arran ement to be engaged by the locking hooks o both doors, from which it may be understood that a double-door structure 'is intended to be illustrated, the locking' mechanism being omitted from door 8 in order to prevent the confusion and obscurity liabler to arise from the illustration. of a complexity of parts.

From the foregoing description, the constructionV and mode of operation of the locking mechanism will be readily understood, and it will be seen that the closed door will be firmly and securely fastened at top and bottom 1n such a manner as to-prevent any play or spring thereof. When the locking mech anism is arranged on the inner side of an outwardly swinging door, as shown, no part of the lock will e exA osed on the outside of the door, so that the oor can not be opened ex? i 'cept by person on the inside of the apartment closed by the door or by one passing into said apartment from the exterior through an auxiliary door. Moreover, no preliminary adjustments are required to lock the door, as it may be locked by simply lushing or pulling it to closed position. S ould either spring break, the other one would still hold the bolts locked, or should both springs break at the same time, an improbable oc-` door, and by extending the operating lever through the door the latter may be opened from either side. vI have not deemed it necessary to show these `moditica-tions,`as they are such as fall within the scope of the inven.

tion and skill4 of the mechanic and do not vary'the principle of operation of the invenf, tion. I K

ln connection with the locking mechanism for each door, I provide a trip or releasing device whereby' the locking` means may be released from a distant point, thus rendering operating arm 34 and a trip arm 35.` These vangle or bell-crank lever 33 embodying an y armsare connected at their-point of? intersection by a hub or sleeve 36 through twhichy passes a rod 37 journaled to rotate. at its ends in the bracket arms 10 and l1 and to which said sleeve is `fixed by a pinor key 38. The arm 35 is provided with a hooked extremity 39 to engage the keeper pin 12 and limit the swinging movement of the lever in its releas.` '-ng action, the lever being retained in normal position and returnedto such position after actuation by a spring 40 connecting the arm 34-with the bracket.' On the arm 35 is'a sleeve 41 through which passes a contact pin 4'2 projecting laterally-beyond both sides` of the lever to provide latch engaging members 43 adapted to engage the beveled faces of the upper locking hooks oi both doors 1 and 8. The arm 34 is formed with an eye 44 for con-4 nection with an operating rope, chain orcable (not shown) which may extend te any suitable point in the engine house for operation. By pulling on this 'rope or table the lever will be actuated raise and release the latches in an obvious vmanner, allowing the doors to be opened, andfupolf release of said rope the springT 40 willtreturn the lever to normal position. It will be observed, that the trip device does not in any way interfere with the opera tion of the latch, and will automatically reset itself for operation, and its advantages in use for the purpose described will be apparent.

Havin` thus fully described the invention,

engagement with said pin, a pivoted automatically-retracted trip device mounted on the keeper for engaging the'beveled portion and retracting the bolt, and means for operating said trip device.

2. In a door lock, the combination of upper and lower keepers, each embodying a )racket having spaced arms and a pin extending transversely between the arms, a door, spring actuated bolts pivoted to the door and having beveled hooked ends to ride over-and snap into engagement with said pin, a rod connecting thebolts for movement in unison, a retracting lever pivotally connected with the-door and rod, a pivoted automatically-retracted trip device mounted onthe upper keeper and adapted to engage the beveled portion ofthe associated latch to retract the same, whereby the latches may be retracted independently of the lever, and means for operating said trip device.

3. In adoor lock, the combination of upper and lower keeper brackets, a door provided with recesses, slottedV plates covering saidrecesses and adapted to abut against said keeper brackets to limit the closing movement el the door, bolts pivotally mounted within the recesses and extending through the'slots in the plates and provided at their outer ends with hooks to engage. the keepers, the lower end walls of the slots of the plates Iforming stops to limit the downward movement of the bolts, springs within the recesses and'acting upon the pivoted ends ot the bolts to tnrour the hooked ends thereof downward, a rod connecting the bolts for movement in unison, and an 'operating device connected with said rod.

L. ln door lock, the combination'of upper and lower keeper brackets, each having .spaced arms and. a locking pin cxtemling between, the arms, a door provided with recesses, slotted plates covering said recesses and adapted 'to abut against said keeper brackets lo limit the closing movement ol the door, bolts pivot-ally mounted within the recesses and extending through the slots in the platos and provided nt their outer ends i with hooks to engage the locking pins ol' the l keepers. the lower cnd walls of the slots oi the plates forming stops to limit the downward movement ol' thc bolts, springs within the recesses and acting u ,on the pivoted ends ofthe bolts to throw tie hooked ends thereof downward, arod connecting the bolts l'or movement in unison, and an operating device coniiectcd with said rod. i

5. ln a door lock, a keeper, a door, a pivoted latch upon the door to interlock with the keeper, a trip device pivotally mounted on the keeper to engage and release the i l i i l latch, and means for ,automatically resetting said device after operation.

6. In a door lock, a keeper rovided with a keeper pin, a door, a pivoted hooked latch on the door to engage said pin, a trip lever pivotally mounted uponv the keeperA and having an operating arm and a trip arm, the latter being rovided with a projection to engage and re ease the latch and a stop lportion to engage the pin, and a spring acting on said operating arm t0 retract and automatically reset said lever.

7. In a door lock, the combination of upper and lower keeper brackets, a door provided with recesses, slottcd plates covering said. recesses, bolts pivotally mounted within the recesses and extending outwardly through the slots in the lates and provided at their outer ends with liooks to-engage the keepers, the lower end walls of the slots of the lates vforming stops to limit the downwarc movement of the bolts, a rod connecting the bolts for movement in unison, spring means for projecting the bolts', and an operating device connected with said rod.

8. ln a door lock, a keeper pin, a door, a

pivoted hooked latch 0n the door to engage said pin, and a spring retracted latch lever rovided with a trip arnrto engage and reease the latch and a stop portion to engage the pin.

9. ln a door lock, a keeper having spaced arms, a pin extending between the arms, a

per and lower keepers, pivoted hooked bolts on the ldoor beveled to snap over into engagennnt with thc keepers, a rod connecting tb(x bolts l'or movement in unison,`nii operating lever mounted on the door-and, connected with the rod,l and a trip vdevice'a'rranged to engage one of the bolts, whereby the latter may be retracted independent of said rod.

In testimony whereof l alloc my signature in presence of two witnesses.

WALTER J. PARLE.

Witnesses (Inns. MGDERMOTTI, Jenn Larsen. 

